Improvement in reflectors for street-lamps



J." W. CREMlN.

Lamp Reflector.

Patented Sept 7, 1869.

JOSEPH W. CREMIN.

OF NEW YORK, N; Y.

Letters Patent No. 94,570, dated September 7, 1869.

IMPROVEMENT IN REFLECTORS FOR STREET-LAMS.

The Schedule referred to n these Letters Patent and making part o the name.

To all whom 'it may conver-n:

Be it known that I, JOSEPH W. CREMIN, of the city, County, and State of New York, have invente'd a. new Reflector for Street-Lamps, and other lamps; end I do hereby declare that the following is a full and exaot description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon.

The nature of my invention consiste of a reflector, composed of metal and glass,the form of which is the inverted frustum of a hollow pyramid, open at both ends, to be pleced in street-lamps, over the flame.'

The refleetor can be used' in allthe street-lamps now in nse, being inserted into the lamps through the door into its postion over the flame, with' the broed end fittng into the widest part of the lamp, and the narrow end lower down, placed over theflame.

The rays of light ascending through the upper part of the street-lamps have been hitherto lost; but by my refleetor, these rays erc reflected downward and outward.

Coucave refiectols colleet and concentrate the re'- flected light in a Small space, but my reflector produces results that have not been hitherto attained in light from street-lamps.

Figure 1 is a plan view of the 'refiector with the refiecting-surface up.

Figure 2 is a front view of the refiectoras situated iu the strcet-lamp.

Figure 3 is a sectional view of fig. 2, taken through the. centre of the lamp and reflector, showing the draughts S.

.Figure 4 is the shape of' one of the glasses for outside of refiector.

F' G' H', as shown' in the drawing, indicate the form of the glas'sfor one of the sidcs.

The frame is of metal, and the glasses a-re held on the outside by the fianges E F G H at the narrow end, and A B O D at the broed end, in fig. 3.'

It will he seen, that turning down the flanges A B O D, to hold the glasses 1', 2, 3, 4, leaves a space or draught, S, through which the heated air escapes on each side, When the reflector is plaeed in the-lamp.

The corner-s of-the metal frame are strengthened by the piece K, which also serves the function of supporting the reflector in the lamp, in the position shown n fig. 4. y

The refiector being composed of a metal frame and rcmovable glasses, it is evideut that a; broken glass can be easily replaced withoutiujury to the others.

I do not confine myself to glass in the construction of .the refiector, as other s'uitable materiels can be used.

l'he aperture 1 is for the escapa of sinoke and heated air, and may be of other form then'that shown in the-drawing, which would give the reflector the shape of a pyramid. i

' The main object of my invention is to produce e refiector for street-lamps which is cheap in construct-ion, can be inserted in all 'the old street-lamps in use, thereby ucreasing the luminosity, by refieoting down- Ward and outward the light, which has been heretofore lost, by ascending through the upper part of the lam I believe I have thus shown the nature of my invention, so as to enable others to make and use the same; therefore,

What I claim, and desire to Secure by Letters Patent, is 4 The reflector, as herein described and shown, having the form of the inverted frnstnm of a pyramid, with the draughts at the sides, and the aperture through the centre.

J OSEPH W. CREMIN.

Witnesses:

J. W. OOLLAMER, J NO. D. PATTEN. 

